diff --git a/rhodecode/public/js/mode/r/index.html b/rhodecode/public/js/mode/r/index.html new file mode 100644 --- /dev/null +++ b/rhodecode/public/js/mode/r/index.html @@ -0,0 +1,74 @@ + + + + + CodeMirror: R mode + + + + + + + +

CodeMirror: R mode

+# Code from http://www.mayin.org/ajayshah/KB/R/
+
+# FIRST LEARN ABOUT LISTS --
+X = list(height=5.4, weight=54)
+print("Use default printing --")
+print(X)
+print("Accessing individual elements --")
+cat("Your height is ", X$height, " and your weight is ", X$weight, "\n")
+
+# FUNCTIONS --
+square <- function(x) {
+  return(x*x)
+}
+cat("The square of 3 is ", square(3), "\n")
+
+                 # default value of the arg is set to 5.
+cube <- function(x=5) {
+  return(x*x*x);
+}
+cat("Calling cube with 2 : ", cube(2), "\n")    # will give 2^3
+cat("Calling cube        : ", cube(), "\n")     # will default to 5^3.
+
+# LEARN ABOUT FUNCTIONS THAT RETURN MULTIPLE OBJECTS --
+powers <- function(x) {
+  parcel = list(x2=x*x, x3=x*x*x, x4=x*x*x*x);
+  return(parcel);
+}
+
+X = powers(3);
+print("Showing powers of 3 --"); print(X);
+
+# WRITING THIS COMPACTLY (4 lines instead of 7)
+
+powerful <- function(x) {
+  return(list(x2=x*x, x3=x*x*x, x4=x*x*x*x));
+}
+print("Showing powers of 3 --"); print(powerful(3));
+
+# In R, the last expression in a function is, by default, what is
+# returned. So you could equally just say:
+powerful <- function(x) {list(x2=x*x, x3=x*x*x, x4=x*x*x*x)}
+

+ + +

MIME types defined: text/x-rsrc.

+ +

Development of the CodeMirror R mode was kindly sponsored + by Ubalo, who hold + the license.

+ + +